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Consider a phase-locked loop consisting of a multiplier, loop filter, and voltage controlled oscillator (VCO). Let the signal applied to the multiplier input be a PSK signal defined by s(t) = Ac cos [2pfct + kpm(t)] where kp is the phase sensitivity, and the data signal m(t) takes on the value + 1 for binary symbol 1 and - 1 for binary symbol 0. The VCO output is r(t) = Ac sin [2pfct + ?(t)]
(a) Evaluate the loop filter output, assuming that this filter removes only modulated components with carrier frequency 2fc.
(b) Show that this output is proportional to the data signal m(t) when the loop is phase locked, that is, ?(t) = 0.
DFI of real sequences with odd harmonics only Let x(n) be an N-point real sequence with N-point DFT X(k) (N even). In addition, x(n) satisfied the following symmetry property:
Find the maximum value of R. Using the value of R found in part (a), design a multiplexing system that first multi-plexes s1 (t) and s2 (t) into a new sequence, s5 (t), and then multiplexes s3 (t), s4 (t), and s5 (t).
Car manufacturer claims that its vehicles average at least 30 miles per gallon.,
The front of a jet engine acts as a diffuser receiving air at 900 km/h, -5°C, 50 kPa, bringing it to 80 m/s relative to the engine before entering the compressor. If the flow area is reduced to 80% of the inlet area find the temperature and pressu..
Explain how text messaging works.Perform research and discuss how an audio CD and an audio DVD compare.
(a) The mass flow rate of isobutane in the binary cycle, (b) The net power outputs of both the flashing and the binary sections of the plant, and (c) The thermal efficiencies of the binary cycle and the combined plant.
A prismatically shaped gate placed at the end of a freshwater channel is supported by a pin and bracket at A and rests on a frictionless support at B. The pin is located at a distance 4 h = in. below the center of gravity C of the gate. Determine ..
What will happen to the total annual variable cost? The annual variable cost includes the annual ordering cost and annual inventory holding cost?
block diagram system performance and responses1. simplify the above block diagram and determine the closed diagram
Our project is to design a functional jacket that will charge a mobile device on the go. Most people have had their cellphone lose charge at a time when it is inconvenient or impossible to recharge it. Our project aims to eliminate that problem by..
Formulate a linear programming model for the above distribution management problem. Define your decision variables and the notation you use for them, express the objective and objective function, and constraints using your decision variables.
Calculate the volumetric flow rate and the mass flow rate and determine the average flow velocity of the air and the air quantity flowing
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